IBM AIX - ODM

What is ODM?

ODM

• Maintains system config, device and vital product data
• Provide a more robust, secure and sharable resource
• Provide a reliable object oriented database facility

Data Managed By ODM

• Device Configuration Information
• Software Vital Product Data
• SRC information
• Communications configuration data
• Menus and commands for SMIT

ODM has three components

• Object class - These are datafiles.
• Objects - Records within Datafiles
• Descriptors - Field within a record

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Where ODM Object Class files are stored?

This can be defined in /etc/environment file. The ODM object clases are held in three repositories

1. /etc/objrepos
2. /usr/lib/objrepos
3. /usr/share/lib/objrepos

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Some important ODM Database files

Supported devices and attributes and connection information are stored in

PdDv, PdAt, PdCn, etc..

Records or customizrd Devices and attributes, VPD are stored in

CuDv, CuAt, CuDep, Config_Rules, CuVPD, etc ...

Have software information

lpp, history, product, inventory, etc..

SMIT menus, commands, options

sm_cmd_hdr, sm_cmd_opt, sm_menu_opt

NIM Resource and configuraion informations

nim_object, nim_pdattr, nim_altr

Errorlog, alog and dump file info

SWservAt

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Useful ODM Commands

odmget - To retrives objects from an Object Class in stanza format 

odmdelete - To delete objects what meet a specifig criteria. If no criteria specified, all objects are deleted 

odmadd - To add a new object to an object class 

odmchange - To change all objects with in an Object Class that meet a specifig criteria 

odmshow - To display object class definition 

odmcreate - To create Object Class for application that will use ODM DB 

odmdrop - To remove an Oobject Class

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Some ODM Command examples

To list all records with an Object Class CuDv

# odmget CuDv

To find out an object within CuAt with condition name=sys0 and attibute=maxuproc

# odmget -q "name=sys0 and attribute=maxuproc" CuAt CuAt: name = "sys0" attribute = "maxuproc" value = "2000" type = "R" generic = "DU" rep = "nr" nls_index = 20

To delete the above object

# odmget -q "name=sys0 and attribute=maxuproc" CuAt > file.1 # odmdelete -q "name=sys0 and attribute=maxuproc" -o CuAt

To add the deleted object again to the above object class

# odmadd file.1 # add the file content to appropriate Object class

Fix ODM related errors for devices (CuDv Object Class)

$ cfgmgr
cfgmgr: 0514-604 Cannot access the CuDv object class in the
device configuration database.

The Fix:

01. cd /etc/oberepos 02. cp Config_Rules Config_Rules.backup 03. odmget -q rule="/etc/methods/darcfgrule" Config_Rules 04. odmdelete -q rule="/etc/methods/darcfgrule" -o Config_Rules 05. savebase -v 06. cfgmgr